Oblique bitterleaf (Hebonga obliqua)

Silhouette: T. Michael Keesey / License

Hebonga obliqua - Comprehensive Overview of the Tropical Species

Growing primarily in the tropical forest environments of the Philippines, Hebonga obliqua showcases unique adaptation strategies to equatorial climates. The species remains a subject of interest for researchers studying tropical flora diversity.

This woody species was first described in botanical literature by the renowned German botanist Ludwig Radlkofer in 1911. It typically populates lowland rain forests and undisturbed forest margins.

Taxonomy

  • царство Plantae
  • division Tracheophytes (Vascular Plants)
  • subdivision Spermatophytes (Seed plants)
  • Angiosperms
  • mesangiosperms (Core angiosperms)
  • eudicots
  • Superrosids
  • rosids
  • malvids
  • order Sapindales
  • family Simaroubaceae (Quassia family)
  • genus Hebonga (Hebonga Tree)
  • species Hebonga obliqua (Oblique bitterleaf)

Living Pulse

Morphology

The structural characteristics of Hebonga obliqua reflect its adaptation to humid forest understories. It develops a sturdy root system and relatively slender branches that support its foliage.

Key morphological features include:

  • Foliage: The leaves are arranged alternately along the stems, displaying an asymmetrical or oblique base, which inspired its specific epithet.
  • Bark: The bark is typically smooth, gray to brown, and possesses a bitter taste characteristic of related woody flora.
  • Flowers: Small, inconspicuous flowers are produced in clusters, adapted for pollination by local forest insects.

Applications

Ecosystem support constitutes the primary value of Hebonga obliqua in its native habitats. The plant contributes to soil stabilization and provides shelter for various tropical microorganisms.

Potential uses include:

  • Traditional practices: Related species are sometimes explored in local folk medicine due to the presence of bitter compounds.
  • Ecological restoration: It can play a role in reforesting degraded tropical areas within its natural range.

Interesting facts

The specific epithet obliqua refers to the uneven or asymmetrical shape of the leaf bases, which is a key identifying feature. This asymmetry helps optimize light interception in dense forest canopies.

Botanical records indicate that Ludwig Radlkofer published the description of this species in the Philippine Journal of Science, marking an important contribution to Malesian botany.

Geography of distribution

  • Philippines

Sources

  • GBIF: Global Biodiversity Information Facility database records.
  • IPNI: International Plant Names Index publication entries.
  • WFO: World Flora Online taxonomic portal.

Technical Information

External Databases: GBIF, POWO, Tropicos

See also

True Araucarias

True Araucarias

Araucaria sect. Araucaria

Araucaria sect. Araucaria is a botanical section of evergreen conifers native to South America. It …